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Acianthus apprimus D.L.Jones
Family Orchidaceae
Acianthus apprimus D.L.Jones APNI*

Description: Terrestrial herb.

Leaf 18–40 mm long, 14–35 mm wide, upper surface dark green, lower surface reddish purple.

Raceme 5–20 cm high, 2–9-flowered. Flowers 9–12 mm long, translucent pinkish with a dark purplish red labellum. Dorsal sepal narrow-ovate to ovate, cucullate, 9–14 mm long, 4–6 mm wide. Lateral sepals linear to lanceolate, 9–12 mm long, c. 1.3 mm wide, with a red central stripe; apical point 2–3 mm long. Petals narrow-ovate to lanceolate, c. 4 mm long, c. 1 mm wide, with a red central stripe. Labellum ovate to lanceolate, distal margins revolute, cordate to elliptic when flattened, 5.5–7 mm long, 2.5–4 mm wide, long-acuminate; callus thick, fleshy, densely papillose near the apex.

Flowering: February–April

Distribution and occurrence: Grows in moist areas of tall forest; known from Kanangra Walls, Mt Wilson and Point Lookout (New England N.P.).
NSW subdivisions: NT, CT

Threatened species: ROTAP: 2R
AVH map***

Text by D. L. Jones
Taxon concept: Flora of NSW 4 (1993)

APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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